Finding the Fourth Proportional to 99,236.49, 136,916.18 and 56,209.14
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Solution
The fourth proportional to 99,236.49, 136,916.18 and 56,209.14 is: 77,551.52
Step by Step Solution
- Step 1: Write the proportion equation
99,236.49 : 136,916.18 = 56,209.14 : x - Step 2: Convert to fraction form
99,236.49/136,916.18 = 56,209.14/x - Step 3: Cross multiply
99,236.49x = 136,916.18 × 56,209.14 - Step 4: Simplify right side
99,236.49x = 7,695,940,729.89 - Step 5: Solve for x
x = 7,695,940,729.89/99,236.49 - Step 6: Final answer
x = 77,551.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.